Sensor fixed with measurements made at multiple depths within a fixed range (e.g. ADCP) - The sensor is at a fixed depth, but measurements are made remotely from the sensor over a range of depths (e.g. ADCP measurements)

Sensor or Sampling Depth Datum

Approximate - Depth is only approximate

Sea Floor Depth Datum

Instantaneous - Depth measured below water line or instantaneous water body surface

Parameters

BODC CODE

Rank

Units

Title

BINNUMBR

0

Dimensionless

Bin number

AADYAA01

1

Days

Date (time from 00:00 01/01/1760 to 00:00 UT on day)

AAFDZZ01

1

Days

Time (time between 00:00 UT and timestamp)

ACYCAA01

1

Dimensionless

Sequence number

DBINAA01

2

Metres

Depth (spatial coordinate) of ADCP bin relative to water surface {bin depth} in the water body

LCEWAP01

2

Centimetres per second

Eastward velocity of water current (Eulerian measurement) in the water body by moored acoustic doppler current profiler (ADCP)

LCNSAP01

2

Centimetres per second

Northward velocity of water current (Eulerian measurement) in the water body by moored acoustic doppler current profiler (ADCP)

Definition of Rank

Rank 1 is a one-dimensional parameter

Rank 2 is a two-dimensional parameter

Rank 0 is a one-dimensional parameter describing the second dimension of a two-dimensional parameter (e.g. bin depths for moored ADCP data)

RAPIDMOC/MOCHA AE1404 Moored ADCP Data Quality Document

During BODC quality control, data were screened using in house visualisation software. The data were screened and any obvious outliers and spikes were looked at in closer detail and flagged if necessary. Some bin depths on the moorings were negative, this is because the ADCPs were upward-looking. The ADCPs were also mounted fairly high in the water column relative to its range which is why there are sometimes only 11 positive bin depths. Data which were out of the water have been flagged as null. However, due to knockdown events bins are not always constantly null.

Co-authorship contact:

Rapid Climate Change (RAPID) Data Policy

The following data policy has been ratified by the full Steering Committee and will apply to all projects funded through RAPID:

data should be lodged with the appropriate data centre on acquisition*, together with such metadata as are defined under the RAPID Data Management Plan.

data would be embargoed for 1 year from acquisition, allowing the PI and co-workers to exploit it in the first instance. Metadata should not be embargoed, to allow the wider community to be aware of work being carried out under RAPID and facilitate community building.

data should be made available to the RAPID community after 1 year, and to everyone after 2 years.

anyone making use of RAPID data within 3 years of it being lodged at the data centre would be required to include the PI and/or co-workers (as appropriate) as co-author/s on any resulting papers.

PIs and/or co-workers failing to comply with the RAPID data policy would be subject to appropriate sanctions.

* On acquisition: the time-scale may vary between data types (for example, real-time data could go directly to a data centre) but the overall aim is to keep the time-scale as short as possible and certainly less than 6 months. This is to ensure that data acquired during RAPID are available to the RAPID community within the lifetime of the programme.

Introduction

Scientific Rationale

To set in place a system for continuous observation of the meridional heat transport in the subtropical Atlantic, with which to document its variability and its relationship to oberved climate fluctuations, and to assess climate model predictions

Overview

MOCHA is a collaborative project, partnered with the UK RAPID Program, to measure the heat and freshwater transports of the North Atlantic Ocean. These transports are called the Thermohaline or Overturning Circulation. Simply put, warm waters move poleward at the surface of the ocean, where they cool and sink, to return equatorward in the deep ocean.

Fixed Station Information

Station Name

Western Boundary Array

Category

Offshore area

Latitude

26° 37.50' N

Longitude

73° 37.50' W

Water depth below MSL

RAPIDMOC/MOCHA Western Boundary (WB) Array

The Western Boundary Array defines a box in which moorings were deployed at the western side of the North Atlantic as part of the RAPIDMOC project and the collaborative project Meridional Overturning Circulation and Heatflux Array (MOCHA). The box region has latitudinal limits of 26° N to 27.5° N and longitudinal limits of 69.5° W to 77.5° W. Moorings have occupied this region since 2004 and are typically deployed for 6 to 18 months.

Cruise data summary

During the cruises to service the moored array, a variety of data types are collected. The table below is a summary of these data. The number of CTD profiles performed on these cruises within the box region defined above is also included. Trans-Atlantic hydrographic CTD sections have also been performed since 2004 and are included in the table.

Related series for this Data Activity are presented in the table below. Further information can be found by following the appropriate links.

If you are interested in these series, please be aware we offer a multiple file download service. Should your credentials be insufficient for automatic download, the service also offers a referral to our Enquiries Officer who may be able to negotiate access.

Related series for this Fixed Station are presented in the table below. Further information can be found by following the appropriate links.

If you are interested in these series, please be aware we offer a multiple file download service. Should your credentials be insufficient for automatic download, the service also offers a referral to our Enquiries Officer who may be able to negotiate access.